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LOCTITE STYCAST ES 2510 – Epoxy Encapsulant – General purpose potting and encapsulating electrical devices requiring flame retardancy

  • Item Name: LOCTITE STYCAST ES 2510
  • Manufacturer: Henkel Corporation
  • Product category: Epoxy encapsulant for potting and encapsulation
  • Technologies: Epoxy technology with low viscosity, flame retardant properties, excellent dielectric performance, and RoHS compliance
  • Applications: Ideal for encapsulating and potting electrical devices that require flame retardancy and reliable dielectric properties.
  • Color: Beige liquid (Resin)
  • Cure type: Heat cure
  • Package size: Contact to Techniq VN for details
  • Shelf life: Approximately 9 months

1. Product Overview

LOCTITE STYCAST ES 2510 is a dielectric-grade epoxy encapsulant designed for general-purpose applications requiring flame retardancy. It offers:

  • Technology: Epoxy
  • Appearance: Beige liquid
  • Key Benefits:
    • General-purpose use
    • Low viscosity
    • Flame retardant (UL 94 V0 @ 3mm)
    • Excellent dielectric properties
    • RoHS compliant
  • Cure Type: Heat cure
  • Primary Use: Encapsulation and potting of electrical devices

2. Applications

  • Potting and encapsulating electrical and electronic components
  • Provides electrical insulation with excellent dielectric properties
  • Suitable for applications requiring flame retardancy

3. Typical Properties

Uncured Properties (Resin Only)

Property Value
Density @ 25°C 1.43 g/cc
Viscosity (Brookfield, Spindle 4, 10 rpm @ 25°C) 4,700 mPa·s (cP)
Shelf Life @ 25°C 274 days

Uncured Properties (Mixed with LOCTITE CAT LA 9823-76)

Property Value
Mix Ratio (by weight) 100:57
Mix Ratio (by volume) 100:87
Viscosity (Brookfield, Spindle 4, 10 rpm @ 25°C) 5,500 mPa·s (cP)
Work Life (100g @ 25°C) 2.5 hours

Curing Performance

Condition Time
Heat Cure 2 hours @ 60°C
Post Cure (for optimal performance) 16 hours @ 40°C

Cured Properties (Mixed System)

Property Value
Hardness (Shore D) 70
Coefficient of Thermal Expansion (ppm/°C) Below Tg: 64, Above Tg: 194
Glass Transition Temperature (Tg) 18°C
Operating Temperature Range -40°C to +150°C
Compressive Strength 124 N/mm² (18,000 psi)
Linear Shrinkage 0.13%

Electrical Properties

Property Value
Volume Resistivity @ 25°C 1.29 × 10¹⁸ ohm·cm
Dielectric Constant/Dissipation Factor
@ 60 Hz 3.09 / 0.06
@ 1 kHz 2.65 / 0.048
@ 1 MHz 2.39 / 0.032

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